Dave, J.A., and S.S. Shah. 2010. “2-Hydroxy-3-Iodo-4-N-Butoxy-5-Bromopropiophenone Oxime As An Analytical Reagent for Copper(II)”. Asian Journal of Chemistry 20 (6):4185-90. https://asianpubs.org/index.php/ajchem/article/view/19004.